Baby Professor 
Barometers and Hygrometers: When Should I Use Them? | Air Pressure and Humidity Grade 5 | Children’s Books on Weather 

Barometers and hygrometers are important weather instruments that meteorologists use to gather and analyze data. This book will not only show what these two instruments look like, but it will also explain what they measure. Expect to read about humidity and air pressure and how they are used to understand weather patterns. This book ends with an activity that guides you through making your own barometers and hygrometers.

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Baby Professor showcases a collection of subjects that are educational for kids to help them learn how to do something themselves, exactly how something is done or how it came about. Children love to learn through attractive visuals and Baby Prof. is ideal to get your child the head start he or she needs for the future. Our Motto – 'Learning is Fun, so let’s Make it Fun to Learn’.